Type-writing machine.



PATENTED JULY 12-, 1904.

c. J. BOND.

TYPE WRITING MACHINE.

APPLIOATION FILED OUT. 22, 1897.

2SHEET8-SHEET 1.

N0 MODEL.

at a

WITNESSES: v

No. 764,983. PATENTED JULY 12, 1904.

O. J. BOND. I

TYPE WRITING MACHINE.

APPLIOATION FILED 00122, 1897. N0 MODEL... 2 SHEETS-SHEET 2.

Patented July 12, 1994.

PATENT OFFICE.

CHARLES J. BOND, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO THE DENSMORETYPEWRITER COMPANY,

CORPORATION OF NEIN YORK.

OF SYRACUSE, NEW YORK, A

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 764,983, dated July12, 1904. Application filed October 22, 1897. Serial No. 656,012. (Nomodel.)

1'0 u/ZZ whom, it may concern:

Be it known that I, CHAELns J. BOND, a citi- Zen of the United States,and a resident of Springfield, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inTypeWVr-iting Machines, of which the following is a specification.

My invention relates to a platen-scale of the type set forth in thepatents to Henry W. Merritt, No. 658,156, dated September 18, 1900, andto Walter J. Barron, bearing No. 715,943, dated December 16, 1902that isto say, a

' scale which when the platen is down in normal working position isarranged or stands away from the printing-point, but which when theplaten is turned to a non-working position for inspection and correctionof the work is caused to move automatically to the impression-point andthen again to recede automatically therefrom when the platen is turneddown to a working position again.

My invention has for its main object. to provide an improved means formounting and for operating a scale of this description; and to this endmy invention consists in the combinations of devices and features ofconstruction hereinafter more fully described, and particularly pointedout in the appended claims. Certain of the novel devices shown hereinmay, however, be employed independently of the mechanism forautomatically operating the scale.

In the accompanying drawings, Figure l is a front elevation of thecarriage and platenframe of a Densmore writing-machine and with theplaten-frame and platen turned to an abnormal or non-working positionand showing in this view the platen-scale as having been moved up to theline of print or the impression-point. Fig. 2 is a bottom plan View ofthe parts shown in Fig. 1, but with the platen-frame and platen in theirnormal or working positions relatively to the main carriage. Fig. 3 isan enlarged end elevation of the carriage and platen-frame in therelative positions shown in Fig. 1, the carriage being in section. Fig.4 is an enlarged similar view, but with the platen down in work' ingposition, as shown at Fig. 2. Fig. 5 is an 5 enlarged front elevation ofthe platen-frame in the position shown at Fig. 1, but with the maincarriage broken away and shown only in part at the left-hand end of theview in order to more fully exhibitthe actuating devices connected withthe scale, and Fig. 6 is a side diagrammatic view to show the positionsand mode of operation of the said actuating devices.

In the various views the same parts will be found designated by the sameletters and numerals of reference.

A is the main carriage, and B the platen carrier or frame; 1, theplaten-axle supported in slotted uprights or arms 2 on said carriage 5in the usual manner and so that the platen 3 may be turned or swungfromits normal working position, as at Fig. 4, to a non-working position, asat Fig. 3, where the paper may be adjusted and the work readilyinspected 7 and corrected.

4 is the platen-scale, arranged in proximity to the impression-point ofthe types and parallel with the axis of the platen and extending forsubstantially the whole length thereof.

The'ends of said scale are attached to the outer free ends of the longerarm 5 of a pair of bell-cranks or bent levers 6, which are pivoted to ormounted upon the platen-axle or loose collars thereon, whereby saidscale may move or swing circumferentially of the surface of said platenwhen said arms are vibrated. The other and shorter arms 7 of saidbell-cranks and which normally project substantially horizontally in arearward direc- 5 tion, as shown in Fig. 1, are provided each at theirouter ends with a pin 8, which extends laterally into the fork or slot 9of an arm 10, which is pivoted at 11 in an end bar 12 of theplaten-frame. The said pivot 11 9 passes through said end bar, and uponits outer end is attached an arm or lever 13, which projects downwardlyand slightly rearwardly.

On the inner side of each end bar 1A of the main carriage are arrangedtwo lugs or projections 15 and 16, both adapted to actuate theirassociated arm 13, as will presently appear. The two forward lugs orprojections 16 are adapted to act on and vibrate the arms 13 when theyare swung forward in the turning up of the platen to the non-Workingposition, and the two lugs or projections 15 are adapted to act on saidarms when theyare moved rearwardly and the platen is turned down to itsworking position. In the forward travel of said arms 13 they strike thesaid projections 16 just before the platen has fully reached itsnon-working position, and in the backward movement of said arms theystrike the stops 15 before the platen has reached its working position.I/Vhen the said arms 13 strike the forward projections 16, they arecaused to rock and oscillate their connected arms 10, the pivots 11turning in their bearings in the end bars. The oscillating motion of thearms 10 is then communicated to the bell-cranks 6, and through theirvibration the scale-bar is caused to move circumferentially of theplaten, or substantially so, and to advance to that portion of theplaten which when down in its working position alines 0r registers withthe printing or converging point of the types. The scale is thus broughtto this position just before or at about the time the platen has fullyreached its non-working position, (indicated at Figs. 1 and 3,) andwhile the platen is in this position the scale-bar is held in itsshifted position by the weight or pressure of the platen-frame, andhence needs no special attention on the part of the operator, who maynow insert the sheet to be written upon, and after squaring itrelatively to the platen by means of said scale may then bring thedate-line or the point to be corrected or such other space on the paperas may be desired into register with the graduated edge of said scale.When the paper has been thus adjusted, the platen may be turned down atonce to working position,and that portion of the paper at which it isdesired to print will be brought into alinement or register with thestriking-point of the types automatically or without special rotative orline-spacing movements of the platen as common nowadays with fixed orimmovable scales. In the turningdown movements of the platen the scaleis also automatically retracted from the line of print, so as to be outof the way of the types, and this it will be understood is accomplishedby the striking of the arms 13 against the rear pair of projections 15,which cause said arms and the other vibratory parts of the levermechanism to oscillate in the opposite direction, and thus bring thescale back to its first position. The back projections 15 may be locatedon the end bars of the carriage at any desired point, so as to retractthe scale from the line of print at any desired period in the returningmovement of the platen to printing position. Thus, as at Fig. 6, the camor projection 15 is shown in dotted lines as having been set quite closeto the front cam or projection, in which position it will retract thescale on the first part of the returning movement instead of on the lastpart thereof, as shown by the position of the projection in full linesin the same View. By having the scale retracted on the first part of theturning-down movement of the platen erasures may be conveniently madewhile the platen is up and while the line of print is in a positionwhere it will register with the printing point or center when the platenis turned down. As far as the feature of retracting is concerned, aspring may be employed with or without the back projections, as in theBarron case, above referred to. The limiting of the upward or forwardmovement of the scale or bar or the movement thereof into theregistering position is defined by an eccentric stop 17 secured by ascrew on the outside of each end bar 12 of the platen-frame. Byadjusting these eccentric stops the throw of the levers and thescale-bar may be so regulated as that the free working edge of thescale-bar may be brought to the exact required position -'or to the lineor plane at which the bottoms of the letters will strike. Thisadjustment is desirable, because the printing-point varies slightly indifferent machines of the same make. The arms 13 are provided withextensions 18, which contact with said eccentrics or adjustable stopswhen the arms 13 have been sufficiently vibrated by their projections 16to bring the edge of the scale to the printing.- point, and by reason ofsaid contact of the said extensions with the said adjustable stops notonly is the independent movement of the scale arrested, but theplaten-frame itself is also prevented from further turning movement,since at this time the projections 16 act as positive steps to the nowrigid arms 13, and

therefore further rotative movement of the platen-frame is prevented,any efiort to further turn said platen-frame only causing the arms 13 tobear harder against the projections 16 by reason of the pressure of theextensions 18 on the said eccentric stops 17. Thus the parts may bebrought accurately to the required or desired position when the platenis brought or turned into its non-working position.

If desired, the scale may be attached to a rod or axis 19, pivotallymounted in the longer arms 5 of the bell-cranks. A small coiled spring20 may be provided at each end to force said scale-bar against thesurface of the platen or the paper thereon; but while I prefer thisindependent pivotal mounting of the scale it may of course be rigidlyattached to said arms without departing from the gist of myimprovements.

Although my improvements are shown in connection with a Densmoremachine, they may be advantageously employed on other styles or makes ofmachines; and while I have shown means for automatically moving thescale to and from the printing-line upontheplaten be moved from theposition shown at' Fig. 3 in order to receive the type-impressions, solong as the scale may be retracted from the printing-line so 'as toclear the types.

What I claim as new, and desire to secure by Letters Patent, is

1. In a type-writing machine, the combination of a longitudinally-movingplaten adapted to beturned from a working to a non-working position, aplaten-scale moving longitudinally therewith, arms pivoted axially ofsaid platen and supporting said scale, and means for acting on said armsand causing the scale to automatically advance vto the printingpointwhen the platen is turned to its nonworking position.

2. In a type-Writing machine, the combination of a platen adapted to beturnedfrom a working to a nonrworking position, a pair of arms pivotallymounted axially of said platen, a scale-bar attached to the free ends ofsaid arms, a pair of arms pivoted to the platenframe and connected tosaid scale-carrying arms, and projections on the carriage for vibratingsaid arms and causing the scale to ad-- Vance to the printing-point.

3. In a type writing machine, the combination of a platen adapted tobe'turned from a Working to a non-working position, a pair ofbell-cranks or bent levers, a scale-bar attached.

to the free ends of one pair of the arms of the bell-cranks, a pair ofvibratory devices pivoted on the platen-frame having each one armconnected to the free arm of the bell-crank and another arm adapted tobe actuated by a projection on the main carriage.

4. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-working position, a scalebar, abell-crank attached to said scale-bar, the pivoted arm 10 connected tothe arm 7 of the bell-crank, the pivoted arm 13 connected to the arm 10,and means on the main carriage for vibrating the arm 13 to advance thescale when the platen is turned to its non-working position.

5. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-Working position, a bellcrank pivotallmounted axially thereof, a scale-bar attached .to the arm 6 of saidbellcrank, aslotted arm 10 pivoted to the end bar of the platen-frame,the arm 13 attached to the same pivot, and the projection 16 on the maincarriage.

- 6. In a type-writing machine, the combination of a platen adapted tobe turned from a working to a non-working position, a pair ofbell-cranks pivotally mounted axially thereof,

a scale-bar attached to the arms 5 thereof, the slotted arms 10 pivotedto the end bars of the platen-frame and arranged on the inner sidethereof and connected to the arms 7 of the bell-cranks, the arms 13mounted on the pivots of the arms 10 and arranged on the outer sioles ofsaid end bars, and a pair of projections fixed on the end bars of themain car- *riage.

7. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-working-position, a pair of bell-cranksmounted axially thereof, a scale carried by said bell-cranks, a pair-ofvibratory devices pivoted on the end bars of the platenframe andconnected to said bell-cranks, means on the main carriage for actuatingsaid vibratory devices when the platen is turned to a non-workingposition, and means on said carriage for also actuating said deviceswhen the platen is turned back to a working position; whereby the scaleis automatically advanced and retracted.

8. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-working position, a pair of bell-cranksmounted axially of said platen, a scale-bar carried by said bell-cranks,a pair of arms 13 pivoted to the platen-frame and connected to saidbell-cranks, and projections as 15 and 16 for turning said arms 13 andcausing the advance and retraction of said scalebar.

9. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-working position, a scalebar adapted tobe automatically advanced when the platen is turned to its non-working.

position, means for advancing said scale-bar, and adjustable stops forlimiting the action of said. advancing means.

10. In a type-writing machine, thecombination of a platen adapted to beturned from a working to a non-working position, ascalebar adapted to beadvanced when the platen is turned up to a non-working position, meansfor advancing the same, and an adjustable eccentric stop or stops forlimiting the action of said means.

11. In a type-writing machine, the combination of a longitudinallymoving platen adapted to be turned from a working to a nonworkingposition, a scale-bar attached to a lever mechanism and movinglongitudinally with the platen, and means for actuating said mechanismto both advance and retract said scale-bar.

12. In a type-writing machine, the combination of a platen adapted to beturned from a Working to a non-working position, a scalebar mounted onbell-cranks, arms 13 having extensions 18 and pivoted in theplaten-frame and connected to said bell-cranks, the projections 16 onthe carriage-frame, and stops 17 on the platen-frame.

13. In a type-writing machine, the combination of a platen adapted to beturned from a working to a non-working position, a pair of bell-cranksmounted on the axisot' said platen, the pivoted arms 13 having theextensions 18, the projections 16 on the carriageframe, and theadjustable stops 17 on the platen-frame.

14. In a type-writing machine, the combination of a main carriage havingthe projections 15 and 16, a platen-frame, a platen mounted therein, apair of bell-cranks mounted on the axis of said platen and carrying ascale-bar, pivoted arms 10 and 13 on the platenframe connected to saidbell-cranks and the eccentric stops 17 on the platen-frame.

15. In a type-writing machine, the combination with a rotatableplaten-frame, a platen mounted therein, a scale-bar adapted to movetoward the printing-point when the platenframe is turned up, andadjustable means for limiting this movement of the platen-scale and alsothe turning -up movement of the platen-frame.

16. In a type-writing machine, the combination with a platen and a scalemovable longitudinally with theplaten and movable transversely to andfrom the printing-line upon the platen, of adjustingdevices forregulating the extent of movement of the platen-scale.

17. In a type-writing machine, the combination with a platen and acarriage, of a platenscale arranged upon the carriage and normallysupported away from the printing-line upon the platen, means for movingsaid scale into and out of register with the printing-line, andadjustable mechanism for determining the inovement of said scale towardsaid printing- 18. In a type-writing machine, the combination with aplaten and a carriage, of a scale supported on the carriage, a leverconstructed to move said platen-scale from normal position to a positionin register with the printing-line upon the platen, and adjustingdevices for regulating the movement of the scale.

19. In a type-writing machine, the combination with a platen and acarriage, of aplatenscale, arms whereby said scale is supported upon thecarriage, a lever for swinging the scale upon the said arms from normalposition to a position in register'with the print ing-line upon theplaten, and adjusting devices forlregulating the extent of movement ofthe sea e.

20. In a type-writing machine, the combination with aplaten, of a scalemovable longitudinally with the platen and constantly bearing upon theplaten and normally supported out of the path of the types, and meansfor positively moving said scale into and out of register with theprinting-line upon the platen.

21. In a type-writing machine, the combination of a platen-frame, anindicating bar or scale carried by the platen-frame, and ,means forpositively moving the indicating-bar on the platen to and away from theprintingline, to the printing-line for registering and adjusting thepaper and away from the printing-line to escape the types.

22. In a type-writing machine, the combination of a paper-carriage, aplaten-frame carried by said paper-carriage and adapted to be movedindependently thereof transversely of the length of the platen, a scalethat extends longitudinally of the platen and which is carried by theplaten-frame and travels there. with, and means for positively movingthe said scale toward and away from the printing- Signed at Springfield,in the county of Hampden and State of Massachusetts, this 18th day ofOctober, A. D. 1897.

CHARLES J. BOND.

Witnesses:

J. G. DUNNING, H. W. MERRETT.

